19020143 has 8 divisors (see below), whose sum is σ = 20311680. Its totient is φ = 17771040.

The previous prime is 19020137. The next prime is 19020167. The reversal of 19020143 is 34102091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19020143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19020193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9680 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (2538960).

Almost surely, 2^19020143 is an apocalyptic number.

19020143 is a deficient number, since it is larger than the sum of its proper divisors (1291537).

19020143 is a wasteful number, since it uses less digits than its factorization.

19020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21217.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19020143 is about 4361.2088920390. The cubic root of 19020143 is about 266.9344291375.

The spelling of 19020143 in words is "nineteen million, twenty thousand, one hundred forty-three".